加载Silverlight窗口后检测鼠标位置

下面是一个用于构建Silverlight应用程序的分步文章,该应用程序在实例化时检测鼠标是否在Silverlight控件上。

步骤1 :使用Visual Studio创建示例Silverlight应用程序(文件/新项目/Silverlight应用程序)

步骤2 :编辑mainpage.xaml,并将以下代码放入用户控件的网格中:

<Grid HorizontalAlignment="Center" VerticalAlignment="Center">
    <TextBlock x:Name="x_Text" Text="Mouse Was Not Over" />
</Grid>

步骤3 :编辑mainpage.cs,并用以下代码替换mainpage类:

public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();
        base.MouseEnter += OnMouseEnter;
        base.Loaded += OnLoaded;
    }

    void OnMouseEnter(object sender, MouseEventArgs e)
    {
        x_Text.Text = "Mouse Was Over";
        base.MouseEnter -= OnMouseEnter;
    }

    void OnLoaded(object sender, EventArgs e)
    {
        System.Windows.Threading.DispatcherTimer timer = new System.Windows.Threading.DispatcherTimer();
        timer.Interval = new TimeSpan(300 * TimeSpan.TicksPerMillisecond);
        timer.Tick += delegate(object senderTick, EventArgs eTick)
        {
            base.MouseEnter -= OnMouseEnter;
            timer.Stop();
        };
        timer.Start();
    }
}

步骤4 :建立并运行!尝试用鼠标在Silverlight控件的中心和控件外部查看结果!